废弃黏土砖骨料轻质混凝土正交试验研究  

Experimental study on the performance of lightweight concrete with waste clay brick aggregate

作　　者：韩尚宇[1] 康登源 张培恒 王先镕 张慧华[1] HAN Shangyu;KANG Dengyuan;ZHANG Peiheng;WANG Xianrong;ZHANG Huihua(School of Civil Engineering and Architecture,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学土木建筑学院,江西南昌330063

出　　处：《混凝土》2024年第8期163-167,171,共6页Concrete

基　　金：国家自然科学基金(52068054)。

摘　　要：将废弃黏土砖骨料应用于轻质混凝土中,可实现建筑垃圾再利用,同步节省建筑材料,改善轻质混凝土性能。以废弃黏土砖颗粒为骨料,开展轻质混凝土制备试验,研究不同水灰比、泡沫掺量、纤维掺量对废弃黏土砖骨料轻质混凝土的物理力学性能影响。结果表明:水灰比对吸水率影响显著,随着水灰比的增大,吸水率增加了27.03%,泡沫掺量对干密度、抗压强度和劈裂抗拉强度影响显著,随泡沫掺量的增加,干密度、抗压强度和劈裂抗拉强度减小了17.78%、52.52%和34.83%,并建立了抗压强度与干密度、劈裂抗拉强度之间的对应关系式。The application of waste clay brick aggregate in lightweight concrete can realize the reuse of construction waste,simultaneously save construction materials and improve the performance of lightweight concrete.Taking waste clay brick particles as aggregate,the lightweight concrete preparation test was carried out to study the influence of different water cement ratio,foam content and fiber content on the physical and mechanical properties of waste clay brick aggregate lightweight concrete.The results showed that with the increase of the water-cement ratio,the water absorption rate increased by 27.03%.The foam content significantly affected the dry density,compressive strength and splitting tensile strength.With the increase of the foam content,the dry density,compressive strength and splitting tensile strength decreased by 17.78%,52.52%and 34.83%,and the corresponding relationship between compressive strength and dry density,splitting tensile strength was established.

关 键 词：废弃黏土砖骨料 轻质混凝土 室内试验 性能分析 相关性 

分 类 号：TU528.01[建筑科学—建筑技术科学]